Spindle-support for spinning, twisting, and like machines.



G. W. FARNHAM. SPINDLE SUPPORT FOR SPINNING, TWISTING, AND LIKE MACHINES. APPLICATION FILED IEB.7, 1012.

1 ,O40,297, Patented Oct. 8, 1912.

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UNTTED STATES I PATENT OFFICE.

GEORGE W. FARNHAM, 0F LOWELL, MASSACHUSETTS, ASSIGNOR TO LOWELL MACHINE SHOP, OF LOWELL, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

SPINDLE-SULPPORT FOR SPINNING, TWISTING, AND LIKE MACHINES.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Application filed February 7, 1912. Serial No. 676,131.

To all whom it may concern:

Be it known that I, GEORGE WV. FAIlNI-IAM, a citizen of the United States, residing at Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Spindle-Supports for Spinning, Twisting, and the Like Machines, (Case No. 6;) and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invent-ion relates to an inn provement in spindle supports for spinning, twisting and the like machines, and more particularly to spindle supports having a bolster provided with a tapered bearing to receive the tapered pintle of the spindle, a step screw-threaded in the bottom of the bolster and means for locking the step inadjusted position with relation to the bolster In the construction illustrated in the pat: ent to Stimpson, No. 601,846, the step is provided with a screw-threaded portion which enters a screw-threaded axial opening in the 1 bottom of the bolster and the stop is provided with a spring projecting upwardly from its periphery and adapted to enter one of a series of notches in the outside of the bottom of the bolster, so as thereby to secure the step in adjusted position in the holster. In making the adjustment, it is necessary to lift the spring out of the notch in the bolster, and the spring being short and rather stiff and small, it is not altogether easy for the fingers to take hold of the spring and lift it out of the notch in the bottom of the bolster in which it lies. In order to facilitate adjustment of this type of step in the bolster, the patent to Morton, No. 988,130 proposed that the notches in the bottom of the bolster should be provided with inclined sides so that the turning of the step would be suiticient to cause the spring, which, in the Morton construction, is of wire, to ride up the inclined side of the notch without being taken hold of, and lifted out of it. But this construction obviously lacks the security of positive locking of the bolster and step to gether, and, in accordance with the present invention, it is proposed that the notches in the bottom of the bolster shall have precipitous sides so as to prevent the spring from sliding out of them, and in order to get the sprmg out, it is proposed to pivot the spring on the step and to provide a simple arrangement whereby the spring may be lifted out by tipping the spring uponits pivot so as to lift it and permit the step to be turned in the bottom of the bolster.

To the above end the present invention consists in the improved spindle support hereinafter described and particularly defined in the claims.

In the accompanying drawings illustrating the preferred form of the invention, Figure 1 is a vertical section of the spindle and its supporting means; and Fig. 2 is a section taken on line 2-2 of Fig. 1.

In the drawings, the spindle rail 1 carries the bolster case 2 which receives and supports the bolster 3 and which is held from turning in the bolster case by the pin 4 which engages the groove 5 in the inside of the bolster case. The bolster is provided with a.

tapered bearing to receive the tapered pintle 6, and at its lower end it is provided with a screw-threaded axial opening 7 which is adapted to receive the screw-tln-eaded end 8 of the step. The outside of the lower end of the bolster is provided with a series of notches 9 having precipitous sides and adapted to receive the locking end 10 of the locking spring 11 which is pivotally supported upon the pin 12 mounted in the step 13. The locking spring extends from the pivot pin 12 upward and its locking end 10 lies in, one of the notches 9 of the bolster. The locking spring 11 is also provided with a spring arm 14: which is extended downwardly from the pivot 12 and bent back underneath upon itself and there engages the bottom of the slot 15 cut in the stop to reccive it. The locking spring 11 is made of spring steel and the spring arm 14: normally tends to force the lower end outward and thereby to cause the upper end to be pressed into one of the notches 9 in the lower end of the bolster case. A portion of the step 13 is cut away at 16 so as to expose the spring arm of the locking spring. This cut-away portion is of such size that the thumb or finger may be pressed upon the spring arm so as thereby to compress the spring arm against its resiliency and thereby to tip the and to lift the locking end 1.0 out of the notch in which it lies., Then the other hand will turn the bolster on the step, (or the hand holding the step will turn itin the. bolster) until the desired adjustment of the step in the bolster is secured, whereupon the step will be turned until the spring drops into the next adjacent notch, the directioni; of turning the step at this time being such as to cause the screw-threaded end thereof to enter the bolster a little farther than the position found to be that of correct adjustment, it being imperative that after the cor-: rect adjustment of the step is secured, it should not be turned in the direction to; withdraw the step from the bolster, as that? would result in securing a tighter running" fit between the bolster and the spindle pint-leg than the correct adjustment, while a slightly, looser adjustment would be so slightly looser; than the correct adjustment as to be of no; practical importance.

It has been found in practice that four. notches in the bottom of the bolster will be sufficient for all practical purposes, although in the form illustrated in the drawings, the: bolster is shown as provided with six notches.

Having thus described the invention, what is claimed is 1. A spindle support for spinning, twisting and the like machines having, in combination, a bolster case, a bolster and step having a screw-threaded connection for relative adjustment, one of said latter two members being provided with a locking lever pivoted thereto and having a spring arm on one side of said pivot engaging such member and a locking arm on the other side of such pivot adapted to engage a recess in the other member for locking the two together, substantially as described.

2. A spindle support for spinning, twisting and the like machines having, in combination, a bolster case, a bolster and step having a screw-threaded connection for relative adjustment, the lower end of the bolster being provided with a notch and the step being provided with a pivoted spring lever havinga locking end projecting into said notch and a spring arm projecting in the opposite direction and lying normally above the contiguous surface of the step so as thereby to be adapted to be engaged by a digit so as to be depressed to tip the lever about its pivot and lift the locking end out of the notch of the bolster, substantially as 2 described.

GEORGE WV. FARN HAM.

\Vitnesses IRVING I). I'unBALL, HARRY L. PILKINGTON.

7 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, I

Washington, D. G. 

